<template>
    <div>
        <el-upload
            :action="uploadUrl"
            :before-upload="handleBeforeUpload"
            :on-success="handleUploadSuccess"
            :on-error="handleUploadError"
            name="file"
            :show-file-list="false"
            :headers="headers"
            class="editor-img-uploader"
            v-if="type == 'url'"
        >
            <i ref="uploadRef" class="editor-img-uploader"></i>
        </el-upload>
    </div>
    <div class="editor">
        <quill-editor
            ref="quillEditorRef"
            v-model:content="content"
            contentType="html"
            @textChange="(e) => $emit('update:modelValue', content)"
            :options="options"
            :style="styles"
        />
    </div>
</template>

<script setup>
import { QuillEditor } from '@vueup/vue-quill'
import '@vueup/vue-quill/dist/vue-quill.snow.css'
import { getToken } from '@/utils/auth'

const { proxy } = getCurrentInstance()

const quillEditorRef = ref()
const uploadUrl = ref(import.meta.env.VITE_APP_BASE_API + '/common/upload') // 上传的图片服务器地址
const headers = ref({
    Authorization: 'Bearer ' + getToken()
})

const props = defineProps({
    /* 编辑器的内容 */
    modelValue: {
        type: String
    },
    /* 高度 */
    height: {
        type: Number,
        default: null
    },
    /* 最小高度 */
    minHeight: {
        type: Number,
        default: null
    },
    /* 只读 */
    readOnly: {
        type: Boolean,
        default: false
    },
    /* 上传文件大小限制(MB) */
    fileSize: {
        type: Number,
        default: 5
    },
    /* 类型（base64格式、url格式） */
    type: {
        type: String,
        default: 'url'
    }
})

const options = ref({
    theme: 'snow',
    bounds: document.body,
    debug: 'warn',
    modules: {
        // 工具栏配置
        toolbar: [
            ['bold', 'italic', 'underline', 'strike'], // 加粗 斜体 下划线 删除线
            ['blockquote', 'code-block'], // 引用  代码块
            [{ list: 'ordered' }, { list: 'bullet' }], // 有序、无序列表
            [{ indent: '-1' }, { indent: '+1' }], // 缩进
            [{ size: ['small', false, 'large', 'huge'] }], // 字体大小
            [{ header: [1, 2, 3, 4, 5, 6, false] }], // 标题
            [{ color: [] }, { background: [] }], // 字体颜色、字体背景颜色
            [{ align: [] }], // 对齐方式
            ['clean'], // 清除文本格式
            ['link', 'image', 'video'] // 链接、图片、视频
        ]
    },
    placeholder: '请输入内容',
    readOnly: props.readOnly
})

const styles = computed(() => {
    let style = {}
    if (props.minHeight) {
        style.minHeight = `${props.minHeight}px`
    }
    if (props.height) {
        style.height = `${props.height}px`
    }
    return style
})

const content = ref('')
watch(
    () => props.modelValue,
    (v) => {
        if (v !== content.value) {
            content.value = v === undefined ? '<p></p>' : v
        }
    },
    { immediate: true }
)

// 如果设置了上传地址则自定义图片上传事件
onMounted(() => {
    if (props.type == 'url') {
        let quill = quillEditorRef.value.getQuill()
        let toolbar = quill.getModule('toolbar')
        toolbar.addHandler('image', (value) => {
            if (value) {
                proxy.$refs.uploadRef.click()
            } else {
                quill.format('image', false)
            }
        })
    }
})

// 上传前校检格式和大小
function handleBeforeUpload(file) {
    const type = ['image/jpeg', 'image/jpg', 'image/png', 'image/svg']
    const isJPG = type.includes(file.type)
    //检验文件格式
    if (!isJPG) {
        proxy.$modal.msgError(`图片格式错误!`)
        return false
    }
    // 校检文件大小
    if (props.fileSize) {
        const isLt = file.size / 1024 / 1024 < props.fileSize
        if (!isLt) {
            proxy.$modal.msgError(`上传文件大小不能超过 ${props.fileSize} MB!`)
            return false
        }
    }
    return true
}

// 上传成功处理
function handleUploadSuccess(res, file) {
    // 如果上传成功
    if (res.code == 200) {
        // 获取富文本实例
        let quill = toRaw(quillEditorRef.value).getQuill()
        // 获取光标位置
        let length = quill.selection.savedRange.index
        // 插入图片，res.url为服务器返回的图片链接地址
        // quill.insertEmbed(length, "image", import.meta.env.VITE_APP_BASE_API + res.fileName);
        quill.insertEmbed(length, 'image', res.url)
        // 调整光标到最后
        quill.setSelection(length + 1)
    } else {
        proxy.$modal.msgError('图片插入失败')
    }
}

// 上传失败处理
function handleUploadError() {
    proxy.$modal.msgError('图片插入失败')
}
</script>

<style>
.editor-img-uploader {
    display: none;
}
.editor,
.ql-toolbar {
    white-space: pre-wrap !important;
    line-height: normal !important;
}
.quill-img {
    display: none;
}
.ql-snow .ql-tooltip[data-mode='link']::before {
    content: '请输入链接地址:';
}
.ql-snow .ql-tooltip.ql-editing a.ql-action::after {
    border-right: 0px;
    content: '保存';
    padding-right: 0px;
}
.ql-snow .ql-tooltip[data-mode='video']::before {
    content: '请输入视频地址:';
}
.ql-snow .ql-picker.ql-size .ql-picker-label::before,
.ql-snow .ql-picker.ql-size .ql-picker-item::before {
    content: '14px';
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value='small']::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value='small']::before {
    content: '10px';
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value='large']::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value='large']::before {
    content: '18px';
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value='huge']::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value='huge']::before {
    content: '32px';
}
.ql-snow .ql-picker.ql-header .ql-picker-label::before,
.ql-snow .ql-picker.ql-header .ql-picker-item::before {
    content: '文本';
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value='1']::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value='1']::before {
    content: '标题1';
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value='2']::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value='2']::before {
    content: '标题2';
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value='3']::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value='3']::before {
    content: '标题3';
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value='4']::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value='4']::before {
    content: '标题4';
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value='5']::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value='5']::before {
    content: '标题5';
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value='6']::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value='6']::before {
    content: '标题6';
}
.ql-snow .ql-picker.ql-font .ql-picker-label::before,
.ql-snow .ql-picker.ql-font .ql-picker-item::before {
    content: '标准字体';
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value='serif']::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value='serif']::before {
    content: '衬线字体';
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value='monospace']::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value='monospace']::before {
    content: '等宽字体';
}
</style>
